Não informado. (1931). Cleveland Clinic Quarterly. Cleveland Clinic Educational Foundation.
Chicago-referens (17:e uppl.)Não informado. Cleveland Clinic Quarterly. Cleveland, Ohio: Cleveland Clinic Educational Foundation, 1931.
MLA-referens (8:e uppl.)Não informado. Cleveland Clinic Quarterly. Cleveland Clinic Educational Foundation, 1931.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.